ntg-context March 2020

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90 discussions

Can I share METAPOST vardefs over multiple pages?
by Gerben Wierda 16 Mar '20

16 Mar '20

Suppose I have this code: \startMPpage vardef MyShape(expr w, h) = save pth; path pth ; save pic; picture pic; pth = fullsquare xysized (w, h); pic := image ( draw pth; % all kind of stuff here ); setbounds pic to pth; pic enddef ; picture s ; s := MyShape(4cm, 2cm); draw s; drawdot center leftboundary s withpen pencircle scaled 2 withcolor green; drawdot center rightboundary s withpen pencircle scaled 2 withcolor blue; drawdot point .25 along topboundary s withpen pencircle scaled 2 withcolor yellow; drawdot .25[llcorner s, lrcorner s] withpen pencircle scaled 2 withcolor magenta; drawdot origin withpen pencircle scaled 2 withcolor red; \stopMPpage Can I reuse that varied across follow-up MPPages? G

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(bug?) wrong interline in \placelist[alternative=d] with Pagella italics
by Pablo Rodriguez 16 Mar '20

16 Mar '20

Hi Hans, here you have the sample: \setuppapersize[A6] \setupinteraction[state=start] \enabledirectives[references.border] \setupbodyfont[pagella] \starttext \placelist[section] [alternative=d, style=\it] \section{Section 1} \section{\dorecurse{25}{Section }3} \section{Section 3} \stoptext For some strange reason (at least, to me), \placelist[alternative=d] seems to misbehave when using \it or \bi as style. Everthing is fine when italic fonts aren’t used. I’m afraid I may be hitting a bug in both latest MkXL from 2020.03.10 14:52 and MkIV from 2019.07.24 11:31. Many thanks for your help, Pablo -- http://www.ousia.tk

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METAPOST vardef returning multiple and non-numeric types as a single answer?
by Gerben Wierda 16 Mar '20

16 Mar '20

I would like a vardef macro to return the pair of a picture and a bounding box. I don't want to use the setbound operator, because as soon as I do that, I cannot access the components of the picture anymore with pathpart. I found metapost vardef returning multiple values <https://tex.stackexchange.com/questions/448740/metapost-vardef-returning-mu…> on StackExchange but that is about returning multiple values of the same numeric type. Is it possible to have vardef return a set of (picture, path) or (picture, picture) in some way? If not, I need to make two vardef macros for each result type. I tried many things, amongst which: vardef Foo( expr w, h) % define pic pic end group,begingroup % define pic pic endif picture foo[]; foo = Foo( 2, 4);

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Can is somehow inspect the intermediate results of an mtxrun?
by Gerben Wierda 16 Mar '20

16 Mar '20

I have an mtxrun on a .tex file that has problems I need to debug. The .tex file handles well, but whenMETAPOST has a go, it crashes. But after the run, I cannot inspect what source was fed to METAPOST. Can I inspect that (outside of what the log tells me)? In this case, I know METAPOST is fed: picture pic; x:=80.000; y:=200.000; w:=133.000; h:=53.000;pic := ApplicationComponentLogo( w, h, typeString) shifted (x, -y); draw pic; but the log says this is wrong: metapost log > >> unknown picture pic metapost log > >> ApplicationComponentLogo metapost log > ! Equation cannot be performed (unknown picture=numeric). metapost log > <to be read again> metapost log > ( metapost log > <*> ... h:=53.000;pic := ApplicationComponentLogo( metapost log > w, h, typeString) shifted... SoI need to inspect what is fed to METAPOST to see why METAPOST thinks pic or ApplicationComponentLogo have not been defined. G

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Why do I see the outline of the green box in this METAPOST code?
by Gerben Wierda 16 Mar '20

16 Mar '20

Code: vardef Foo(expr w, h, lh) = save pth; path pth; save pthtwo; path pthtwo; save pththree; path pththree; save pic; picture pic; pth = fullsquare xysized (w, h); pthtwo = fullsquare xysized (2*lh, lh) shifted (-w/2, 2.5*lh); pththree = fullsquare xysized (2*lh, lh) shifted (-w/2, lh); fill pth withcolor green; fill pthtwo withcolor yellow; fill pththree withcolor yellow; pic := image ( draw pth; draw pthtwo; draw pththree; ); % setbounds pic to pth; pic enddef ; Call: \startMPpage picture s ; s := Foo(8cm, 2cm, 0.25cm); draw s; drawdot center leftboundary s withpen pencircle scaled 2 withcolor green; drawdot center rightboundary s withpen pencircle scaled 2 withcolor blue; drawdot point .25 along topboundary s withpen pencircle scaled 2 withcolor yellow; drawdot .25[llcorner s, lrcorner s] withpen pencircle scaled 2 withcolor magenta; drawdot origin withpen pencircle scaled 4 withcolor red; \stopMPpage Output: Why is the outline of the green box visible in the yellow boxes? And how can I prevent this from happening?

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Including a separate .mp file
by Gerben Wierda 15 Mar '20

15 Mar '20

I’d like to load a separate file with definitions. Something that contains % file: my definitions.mp \startMPdefinitions … my definitions ... \stopMPdefinitions How do I get this loaded in LuaTeX? How are files found if I want it somewhere in my personal text tree? G

2 1

Is it possible to use the macOS Optima font in ConTeXt/METAPOST?
by Gerben Wierda 15 Mar '20

15 Mar '20

Subject line says it all… Thanks in advance, G

2 1

Re: [NTG-context] ntg-context Digest, Vol 189, Issue 28
by Yves Cloutier 15 Mar '20

15 Mar '20

Hello Wolfgang, after a few attempts that didn't work I copy-pasted the example from the wiki: \definetyping[C][option=commands]\startC #include <stdio.h> int main(){ return 0; /BTEX{\em unreachedCode;}/ETEX}\stopC This did not work. However following the example you provided this works perfectly! Many thanks. On Sun, Mar 15, 2020 at 6:26 AM <ntg-context-request(a)ntg.nl> wrote: > Send ntg-context mailing list submissions to > ntg-context(a)ntg.nl > > To subscribe or unsubscribe via the World Wide Web, visit > https://mailman.ntg.nl/mailman/listinfo/ntg-context > or, via email, send a message with subject or body 'help' to > ntg-context-request(a)ntg.nl > > You can reach the person managing the list at > ntg-context-owner(a)ntg.nl > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of ntg-context digest..." > > > Today's Topics: > > 1. Source Code with Bolded Keywords (Yves Cloutier) > 2. Re: Source Code with Bolded Keywords (Wolfgang Schuster) > 3. Quizz (Fabrice Couvreur) > 4. Re: Quizz (Henning Hraban Ramm) > 5. METAPOST vardef returning multiple and non-numeric types as a > single answer? (Gerben Wierda) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sat, 14 Mar 2020 11:54:31 -0400 > From: Yves Cloutier <yves.cloutier(a)gmail.com> > To: mailing list for ConTeXt users <ntg-context(a)ntg.nl> > Subject: [NTG-context] Source Code with Bolded Keywords > Message-ID: > <CAGW= > J5f28-8QV3yKrP+ev+UkRf0Q+SP3MAbskaPxbkvn956GZw(a)mail.gmail.com> > Content-Type: text/plain; charset="utf-8" > > Hello, > > I am trying to typeset source code for a custom programming language and > would like to have the keywords in bold text. > > I tried following the example found here regarding verbatim displays: > > https://www.contextgarden.net/Verbatim_text#Displayed_text > > Specifically the C example, however this does not seem to work. No > formatting is applied to my keywords. > > Just wondering if the way to do it has changed or if there are other > examples I could look at to compare with what I'm doing. > > Regards, > > yc >

2 1

Source Code with Bolded Keywords
by Yves Cloutier 14 Mar '20

14 Mar '20

Hello, I am trying to typeset source code for a custom programming language and would like to have the keywords in bold text. I tried following the example found here regarding verbatim displays: https://www.contextgarden.net/Verbatim_text#Displayed_text Specifically the C example, however this does not seem to work. No formatting is applied to my keywords. Just wondering if the way to do it has changed or if there are other examples I could look at to compare with what I'm doing. Regards, yc

2 1

Why does this METAPOST vardef 'save' statement fail?
by Gerben Wierda 14 Mar '20

14 Mar '20

I have this vardef: vardef Foo(expr w, h) = save pth; path pth; %save pth2; path pth2; save pic; picture pic; pth = fullsquare xysized (w, h); %pth2 = fullsquare xysized (h/4, h/8) pic := image ( draw pth; %draw pth2 shifted (-w/2, -h/4); % all kind of stuff here ); setbounds pic to pth; pic enddef ; As soon as I uncomment the bold line (first comment) a mtxrun fails. Whatever I try, a single save statement, etc., I fail in getting a second local variable. The METAPOST manual is no help. The error shown is: metapost log > ! Extra tokens will be flushed. metapost log > <to be read again> metapost log > 2 metapost log > Foo->...h;path.pth;save.pth2 metapost log > ;path.pth2;save.pic;pictur... metapost log > <*> ... ; s := Foo(8cm, 2cm) metapost log > ; draw s; drawdot center l... metapost log > Why? G

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ntg-context March 2020